Chute for metal-dressing machines.



Nu. 7n,237.

Patented Oct. l4, I902. F. P. STIKER &. 0. C. BURTON. CHUTE FOR METALDRESSING MACHINES.

(Application filed Sept. 12, 1901.

4 Shee ts-Sheet I.

(No Model.)

INVENTORS F.P.-STIKER & 0.0. BURTON WITNESSES:

ATTORNEY TNE Nunms PETERS cov PNOi'QLITHGY. WASHYNGTDN, n. c.

No. 7u,2s7. Patented Oct. l4, I902.

F. P. STIKER & 0. c. BURTON.

GHUTE FOR METAL DRESSING MACHINES.

(Application filed Sept. 12, 1901.) (No Model.) 4 Sheets-Sheet 2.

WITNESSES: iNVENTDRS Q Q RRZTIKER W BY 0. GBURTQN AWZZZi fwd/QM ATTO NEY"m: nonms ps'mzs ca. vnorourua, WASHINGTON. u. c.

No. 711,237. Patented Oct. l4, [9.02.

F. P. STIKER & 0. G. BURTON.

CHUTE FOR METAL DRESSING MACHINES.

(Application-filed Sept. 12, 1901.)

(No Model.)

4 SheetsSheet- 3 INVEN TORS F.P. STIKER 8n 0. C.BURTON BY (M/ ATTORNEYm: Noam FETERS do v PHoTouTnu. WASNlNQTON, 0. c4

No. 7i|,237. Patented Oct. I4, 1902.

F. P. STIKER'& 0. c. sumo".

GHUTE FUR METAL DRESSING MACHINES.

(Application filed Sept. 12, 1901.)

(No Modal.) 4 Sheats-Sheat 4.

WITNESSES: INVENTORS RPSTIKER & o. 0. BURTON BY My! 2/ A ORNEY m: NORRISPETERS cc, FHOYO-LITHOU WASNINGTON, m c

UNITED STATE PATENT OFFICE.

FLAVIUS P. STIKER, OF BUFFALO, AND ORVILLE O. BURTON, OF NORTHTONAWANDA, NEW YORK.

CHUTE FOR METAL-DRESSING MACHINES.

SPECIFICATION f rming part of Letters Patent No. '71 1,237, datedOctober 14, 1902.

Application filed September 12, 1901. Serial No. 75,184. (No model.)

To aZZ whom it may concern.-

Be it known that we, FLAVIUS P. STIKER, a resident of Buffalo, in thecounty of Erie, and ORVILLE QBURTON, a resident of NorthTonawanda, inthe county of Niagara, State of New York, citizens of the United States,have invented certain new and useful Improvements in Chutes for Metal-Dressing Machines, of which the following is a specification.

Our present invention relates to one of the details of an improvedmachine fordressing pieces of metal which are held by one end while theother end is being dressed, milled, threaded,or pointed. One of theapplications of the machine is the cutting of threads on bolt-blanks,and therefore the description will be confined to the explanation of abolt-machine.

More particularly the invention relates to a chute which is intended tofeed bolts in an automatic and reliable manner to the boltcarrier.

Heretofore, in machines of this type, long and heavy bolts are apt to bejammed be tween the carrier and the guide above the carrier, althoughshort bolts may be fed uniformly without attention on the part of theoperator. The same machine, however, that will operate satisfactorilywith a rather large number of short bolts or with a rather small numberof long bolts will not feed a larger number of long bolts withoutspecial provision. We have solved the difficulty by a combination ofelements forming the subjectmatter of this application.

Figure l is a side elevation of the chute and of the means for operatingthe bolt-releasing devices. Most of the upright or support is brokenaway and many other parts of the bolt-machine are entirely omitted, asthey would not assist in the explanation. Fig. 2 is a plan of the chuteexcept for the righthand portion thereof; but for greater clearness thechute is not inclined as shown in Fig. 1 and the scale is much larger.The heads of bolts and other hidden portions are indicated by dottedlines. Fig. 3 is a side view of Fig. 2, the lower portions of the boltsbeing broken oif and omitted. Fig. 4 is a view similar to Fig. 2 withthe addition of the inclined plane, its rod, and lower hearing, carrier,and guidein part. Fig. 5shows a portion of the carrier and guide andalso that phase of the carrier and gate in which a bolt is entering theguide. Fig. 6 is a perspective view of the inclined plane for operatingone of the gates. Fig. 7 is a plan'of so much of a bolt-machine as willassist in understanding the construction and operation of the presentinvent-ion.

For a clearer understanding of the boltmachine to which this inventionmay be ap plied we refer to our former patent, granted August 19,1902,No. 707,272.

Referring particularly to Fig. 5 aud to the other figures generally, itmay be noticed that the bolts A bear upon one another at the corners. Ifthe pressure of the righthand head is too great upon the left-hand head,the latter will not enter the guide-piece 54 between its circularsurfaces 0 when fed in a circular direction by the notched carrier-wheel95. The object of Fig. 5 is to exhibit what the invention is intended toaccomplishnamely, a relieving of the pressure of a large number of boltssliding down an inclined chute without diminishing the number of bolts.All the elements cooperating to produce the results aimed at will now bedescribed.

The inclined feeding-chute is indicated at 112, and consists of a longpiece having a longitudinal slot extending throughout the whole lengthon the lower side, where there are strips 113, projecting inwardly forforming tracks upon which the bolt-heads may rest and down which theymay slide. The heads of the bolts being square, hexagonal, or any'otherform having two sides parallel, are in the proper position to enter thebolt-carrier, hereinafter described. A hole 112 may be provided for theremoval of bolts centrally located in the chute Without the necessity ofremoving all preceding bolts. The roof 112 of the chute is slightlyhigher than the tops of the bolts for permitting the springD to belocated there and adjusted by a set-screw 115. This screw seldom needsadjustment, because all thebolt-heads are of about the same thickness.By this means the bolts drop more gently and satisfactorily from thechute to the bolt-carrier. If the depth of the chute is built with theright depth, the adjustable springD may be dispensed with.

The chute 112 is always stationary with the frame and is adapted to holda very large number of bolts, which may be of the longest length themachine is designed for and which may be fed into the upper end by handor in any other convenient manner, provided that theheads of the bolts Brest upon the tracks 113.

99 is a gate bolted adjustably by bolts 98 in slots 98 to a plate 98,which serves as a lever, the pivot-pin of which is 101, for permittingthe hook or gate 99 to spring back and forth. The pin 101 has itsbearing on the top of the chute. The plate 98 is an angle-piece andcarries a roller 102, which is 0perated by an inclined plane for thepurpose of opening the gate 99 and which is held away from the plate 98by a collar 103 and which is rigid with the gate 99 and with the plate98 except that the roller may rotate on its pin. The gate 99 is held ina yielding manner in its normal position for retaining the bolts in thechute by means of a spring 100, which is fixed to the side of theangular plate 98 and extends and presses against the chute or a suitableabutment. The inclined plane 104 is fixed upon the lower end of a longrod 111, which is adapted to have longitudinal movements in bearings,one of which is 110. This rod 111 carries a slide 106, which is movablealong the chute 112 by having inwardly-projecting strips 107 on theunder side of the chute. This slide carries a projecting lug 108, lyingin the path of a constantly rotating tripping finger 20, which movesaround the shaft 146, and is therefore conveniently attached to one, 19.of the cams carried upon said shaft. This slide 106 is adjustably fixedto the rod 111. 110 also represents a stop for the spring 111surrounding the rod 111 and abutting against the slide 106, said springbeing a retractile spring to return the rod 111 after being moved upwardby the tripper 20. The lower stop being fastened to the rod 111 limitsthe downward motion of said rod by striking against the abutment 110.The function, therefore, of the rod 111 is to move the inclined plane104, which in turn moves the gate 99 for opening the gate, while thefunction of the spring 100 is to close the gate again before the secondbolt can fall from the chute to the bolt-carrier. This movement isinsured by the location of the tripper on the cam-wheel 19.

By inclined plane we mean a block 104, having a surface 104*, whichslants laterally with reference to the roller 102, so that when theinclined plane moves longitudinally with the rod 111 the roller 102'isobliged to move away from said rod, and therefore tilt the lever-plate98, and with it the gate 99.

It is immaterial how the tripper 20 is caused tointermittently move thelug 108, and thereby open the gate 99, but said tripper is convenientlycarried by mounting it upon the cam 19. In brief, the inclined plane 104opens the gate 99 and the spring 100 closes said gate again. This stepis repeated every time the tripper 20 operates the rod 111 and must takeplace every time that a bolt is to be fed into the bolt-carrier Wheel.

The bolt-carrier consists of a notched wheel, the notches being of asize slightly larger than the diameter of the bolt and all the notchesbeing equally spaced around the periphery of the wheel. These notchesare numbered 95 They are small enough in width to permit the undersurface of the head of a bolt to rest upon the wheel. As a mere matterof convenience the wheel 95 is provided with four equally-spacednotches. It is evident that there would have to be at least two suchnotches, the machine being timed accordingly. A notch 95 is directlyopposite and close to the lower end of the tracks 113 of the chute 112for the evident purpose of being ready to receive a bolt when it isreleased by the gate 99. The principal function of the rotarybolt-carrier 95 is for taking a bolt to a point over the .center of thedies and subsequently for feeding said bolt from the center to thedischarge-chute.

By means of the construction thus far described short bolts or a fewlongbolts may be fed automatically from the chuteto the carrier and moved tothe threading position without any danger of bolts being jammed in theguide 54; but when many large bolts are to be fed automatically weprovide means for preventing any stoppage of the bolts in the guide 54.To this end there is a supplementary gate E, similar to the gate 99 andlocated at the eighth bolt back from the front bolt. The location may bedetermined by running the machine and noticing how many long bolts maybe in the chute without any stoppage. The gate is bolted adj ustably bybolts F, passing through slots to an angle-plate G, which serves as alever whose pivot is H, around which the gate E may swing back andforth. This pivot is screwed into a hole in the top of the chute 112.The angle-lever carries an arm 1, extending laterally from the chute andlocated in the path of a trippingfinger J,extendingfrom the wheel13,mounted upon the shaft 146 in such a position that the finger J willopen the gate E at any time during which the gate 99 is closed.Immediately after the finger J has escaped from the arm I the spring Kreturns the gate E to its normal or closed position, said spring beingfastened to the lever G and bearing against the chute 112, which servesas an abutment.

Although the gates E and 99 and the levers G and 98 are not shown asduplicates, especially as the roller 102 is not necessary on the leverG, yet if desired in the manufacture of the bolt-machines by the hundredthese parts may be made alike.

The carrier 95 has notches 95 for receiving the shanks of the bolts andmay be ro-' tated to carry the bolts away from the chute 112 toasuitable position for threading. No means are shown for rotating thecarrier; but it may be assumed that the same is turned by hand.

The carrier 95 stands directly at the mouth of the chute 112, and thusstops the lower column of bolts from falling out of the chute when thelower gate 99 is open and serves to control the feed of the bolts fromsaid chute.

The cone-pulley may be employed for driving the mechanisms, as it is onthe shaft 146, which is supported in bearings on the uprights 43 and 44.

We claim as our invention 1. The combination with the inclinedfeeding-chute of a metal-dressing machine, of gates at difi'erentportions of said chute, means by which the lower gate is timed to openand close, then the upper gate to open and close, then the lower gate toopen and close, and so on indefinitely, and a device for controlling thefeed of the lower column of bolts during the opening of the lower gate.

2. The combination with the inclined feeding-chute of a metal-dressingmachine, of gates located at different portions of said chute, means bywhich the lower gate is timed to open and close while the upper gateremains closed, then the upper gate to open and close while the lowergate remains closed, and then the lower gate to open and close while theupper gate remains closed, and so on indefinitely, and a device forcontrolling the feed of the lower column of bolts during the opening ofthe lower gate.

3. The combination of a bolt-carrier wheel having peripheral notches, afeeding-chute containing bolts which are free to slide by gravity aloneentirely from said chute and to said notches, a gate acting to stop saidbolts at the lower end of said chute, a stop 54 above said wheel and solocated and shaped as to maintain the heads of the bolts atpredetermined angles relatively to said wheel, and said chute holdingthe heads at predetermined angles relatively to said stop, a guide 54having arc-shaped surfaces 0, one of which is a continuation of the faceof the stop 54, a supplementary gate dividing the upper bolts from thelower bolts, a rotating shaft, and tripping-fingers controlled by saidshaft and adapted to open said gates alternately, and retractile springsfor closing said gates.

4. The combination with the inclined feeding-chute of a metal-dressingmachine, of a carrier located at the exit of said chute, a stop at thedistance of the head of one bolt away from said exit, a gate standingbelow the shank of the lowest bolt for holding a group of bolts in saidchute, a second gate higher up on the chute, and normally insertedbetween the top bolt of said group and below the shank of the lowestbolt of the second group the lower gate opening whereby the lower groupslides by gravity against said stop and comes to rest, said carrierbeing rotary to take the liberated bolt away from its position oppositesaid exit, said lower gate closing again before the carrier removes theliberated bolt, the upper gate opening and allowing the upper group toslide down by gravity, and coming to rest against the lower group andthen closing above the lowest bolt of said upper group.

Signed this 26th day of August, 1901.

FLAVIUS P. STIKER. L. s.] ORVILLE o. BURTON. [L. s]

- Witnesses:

FRANK C. WHITTL sEY, L. A. DIMIOK.

